Thread guide for stop mctions



Sept. 15, 1925 1,553,932

F. CRAWFORD, SR

"THREAD GUIDE oa STOP fmo'rlo'n's Filed Dec. 6. 1923- Patented Sept. 15, 1925.

UNITED STATES PATENT OFFICE. v

FRANK CRAWFORD, SR, 013 NEW BRUNSWICK, NEW JERSEY, ASSIGNO-R TO THE 7 CRAWFORD MANUFACTURING COMPANY, OF

CQBPORATION OF NEW JERSEY.

NEW BRUNSWICK, NEW JERSEY, A

THREAD GUIDE FOR STOP MOTIONS.

Application filed December 6, 1923. Serial No. 678,967.

To all whom it may concern:

Be it known that I, FRANK CRAWFORD,

Senior, a citizen of the United States, and

a resident of New Brunswick, Middlesex County, New Jersey, have invented certain Improvements in Thread Guides for Stop Motions, of which the following is a specification.

My invention relates to certain improve- 1 ments in thread 'uides for stop motions, es-

pecially those a apted for use in knitting machines. 1

One object of the invention is to design a thread guide so that the thread will be retained in position while traveling through the guide and will hold the trip mechanism,

that controls the stop motion, until a thread breaks, when the trip mechanism will fall,

releasing the trip mechanism and stopping the machine.

A further object of the invention is to prevent the inactive threads creeping out .of the guides due to the vibration of the machine. I

In the accompanying drawings:

Fig. 1 is a side view of a thread guide for a stop motion, illustrating my invention;

Fig. 2 is a plan View;

Fig. 3 is a sectional view on the line 3- 3,

Fig 1;

' ig. 4 is a detached the thread guide; and

Fig. '5 is a detached perspective 5 the trip plate. 7

1 is a bracket projecting from the body portion of'a stop motion mounted on a knitting machine. Secured to the bracket is a thread guide 5 which is bent to form a 40 front late 9 and a back late 9. The ends 6 of the plates are flare ,as shown in Fig.

perspective view of View of 3, so that a thread can be readily inserted in the channel 11 between the two plates.

The front plate 9 has a series of transverse slots 7 therein, which are separated by ribs 18, the ribs are bent to form shoulders 17.

The rear plate 9 has short slots 10 therein in line with the slots-7 in the front plate 9.

Mounted in hearings on the bracket 1 is a shaft 2. On this shaft is an arm 3, carrying the slotted trip plate 4. The fingers 8 of this trip plate are so spaced as to fit in the slots 7 of the front plate 9 of the guide. Each finger is bent to form a shoulder 12 andthe end 8 of each finger is bent at an angle so as to extend into the channel 11 between the two plates of the guide, as shown in Fig. 3, forming inclined surfaces for the thread to ride upon when being passed into the space 11 between the two plates.

The thread a passes both shoulders 12' and 17. resting in the position shown.

At the upper end of the guide is a plate 14 having a notch 13. Mounted on a projection 16 below the guide is an eye 15.

The thread a passes from a bobbin through the eye 15 between the ribbed front plate 9 of the guide and the fingers'of the trip plate 4 and through the notch 13 to the knitting machine.

The thread'holds the trip plate 4 in position, but should the thread break, then the trip, plate would fall, turning the shaft 2 and actuating the means that control the stop mechanism of the machine.

I claim The combination in a stop motion, of a guide, which is bent to form a front and a rear plate; a bracket supporting said guide, the front plate being slotted: a thread guide at the upper end of the plate; a thread guide at the lower end of the plate: a shaft mounted on the bracket: and a trip plate carried by the shaft, said plate having fingers extending into the slots of the front plate, each finger having a shoulder, the fingers being beveled beyond the shoulders so that the thread can be. passed through the channel formed by the two plates of the guide and past the shoulders on the fingers of the trip plate.

, FRANK CRAWVFORD, SR. 

